Boom.



A. E. LOOSEN BOOM.

APPLICATION FILED APR. 22. 191B.

Patented Oct. 15, 1918.

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BOOM.

To all whom it may concern:

Be it known that I, ALBERT EDWARD LOOSEN, a' citizen of the United States of America, and resident of the town of Bathurst, in the Province of New Brunswick, in the Dominion of Canada, treasurer, have in- ,vented certain new and useful Improvements 1n Booms, of which the following is the specification.

The invention relates to improvements in booms as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel construction whereby the skin friction and resistance is reduced to a minimum.

The objects of the invention are to faciliespecially in the rougher waters, to economize in the consumption of timber for the purpose of booms, to devise a boom of comparatively light structure, yet buoyant and durable, and generally to provide a cheap, strong and serviceable boom.

In the drawings, Figure 1 is a side elevation of a boom length showing the connecting blocks for joining said length to additional lengths.

Fig. 2 is an end elevation of the boom length.

Fig. 3 is a cross sectional view on the line 3-3 in Fig. 1.

Fig. 1 is a cross sectional view on the line 4-4 in Fig. 1.

Fig. 5 is a perspective detail of a longitudinal beam broken away.

Fig. 6 is a perspective detail of a block.

Like numerals of reference indicate corresponding parts in each figure.

It is well known in lumbering operations that the booms used for gathering and keeping the logs grouped for towing and other purposes become water soaked and to a large extent lose their buoyancy, the result of which is a material increase in skin friction and of course the maximum of resistance, especially the head booms of the raft. The power required to tow the raft is much reduced in the present invention, consequently with the same power greater speed can be made which will effect great economy in the lumbering trade.

Referring to the drawings, the longitu- Patented Oct. 15, 1918. Serial No. 230,051.

dinal beam 1 is the upper one of a boom length or section, the beam 2 the bottom or keel of the boom and the beams 3 and 4 the sides. These beams are made of solid wood preferably, though they may be made hollow or of any suitable material or shape that will retain its buoyancy, however the beams shown are in cross section shaped similar to the segment of a circle.

These beams are mounted on the block 5, which also is shown herein as of solid wood, though it may be of any material or shape. The block 5 is placed at or about the longitudinal center of said beams and the latter are each placed centrally on said block, the beam 1 on the top, the bottom and the beams 3 and 4 on the sides respectively, the beams 1 and 2 being secured by the bolt 6 and nut 7 and the beams 3 and 4: by the bolt 8 and nut 9,; though of course as many bolts may be used as found necessary.

The elongated blocks 10 and 11 project from the ends of the beams being approximately one half within and one half projecting, these blocks being secured to the beams 1 and 2 by the bolts 12 and nuts 13, and to the beams 3 and 4 by the bolts 14 and nuts 15.

Other beam sections are secured to the projecting ends of the blocks 10 and 11 until the desired length of boom is reached when it may be anchored to another boom, pier or boat by a chain through the hole 16.

The advantages of this invention are I readily understood following the description of the details, as it will be seen that there is plenty of water space between beams, and much less wood to be waterlogged, further this form of boom lends itself to the most varied construction, especially in regards to materials and generally it may be said that it will be found a great convenience as well as most economical.

Various changes may be made in working out the details and materials without departing from the spirit of the invention, so long as they are within the scope of the claims for novelty following.

What I claim is In a boom, an intermediate block of substantially rectangular form and having bolt holes therethrough from top to bottom and the beam 2 reversed on side to side, end blocks longer than said inthrough said stringers and said bloc-ks, said termediate block and having bolt holes from blocks projecting beyond said stringers and top to bottom and side to side and anchor forming joint members for similar boom seo- 10 chain holes, and top and bottom stringers tions or anchor chain pieces.

mounted centrally on said blocks, side Signed at Bathurst, New Brunswick, stringers mounted centrally on the sides of Canada. this 2d day of March, 1918. said blocks and fastening bolts extending ALBERT EDWARD LOOSEN.

Gop ies of this patent may be obtained for five cents each, by addressing the Commissioner of Eetents, Washington, i3. 

